I am heavily concerned about the police response to our new equipment. I did some research.

PB's have successfully (subjective) marched through DC wearing plate carriers, helmets, hardknuckle gloves, and thick/short flagpoles.

Courts found in 1999 in DC that a man guilty of firearms related crimes while wearing body armor, found that his wearing of body armor alone was not in itself evidence of any crime or motive of wrongdoing. It is notable that nothing of our wear is rated for any ballistic value.

[defense counsel stressed in closing argument that a bullet-proof vest is “legal [in DC] and the Court will instruct you, the law is, it's perfectly legal to wear a bullet proof vest.” Likewise, the government noted in its closing that “carrying a shield,” without more, is not illegal.]
https://caselaw.findlaw.com/dc-court-of-appeals/1197051.html

Charges From J6 Notable on Weaponry:
Using a Dangerous Weapon
- Entering and Remaining in a Restricted Building with a Deadly or Dangerous Weapon

- Engaging in Physical Violence in a Restricted Building with a Deadly or Dangerous Weapon

- Assaulting, Resisting or Impeding Certain Officers Using a Dangerous Weapon

Notable in that none of these laws relate to the simple carrying of anything deemed as a weapon, but use, or specific locational proximity within a building. No charges appear to relate to body armor in any way. No reference to the word "shield" is found in any of the 600+ cases.
https://www.justice.gov/usao-dc/capitol-breach-cases